College

Select the correct answer.

Simplify the following expression:

[tex]\frac{2x^2 - 6x^2}{2x^3}[/tex]

A. [tex]x^6 - 3[/tex]
B. [tex]x^6 + 3[/tex]
C. [tex]x^6 - 6[/tex]
D. [tex]-4x^6[/tex]

Answer :

We start with the expression

[tex]$$
\frac{2x^2 - 6x^2}{2x^3}.
$$[/tex]

1. Combine like terms in the numerator:

[tex]$$2x^2 - 6x^2 = -4x^2.$$[/tex]

The expression now becomes:

[tex]$$\frac{-4x^2}{2x^3}.$$[/tex]

2. Simplify the fraction by separating the numerical coefficients and the powers of [tex]$x$[/tex]:

[tex]$$\frac{-4}{2} \cdot \frac{x^2}{x^3}.$$[/tex]

3. Divide the coefficients:

[tex]$$\frac{-4}{2} = -2.$$[/tex]

4. Simplify the powers of [tex]$x$[/tex] using the law of exponents [tex]$\frac{x^a}{x^b} = x^{a-b}$[/tex]:

[tex]$$\frac{x^2}{x^3} = x^{2-3} = x^{-1} = \frac{1}{x}.$$[/tex]

5. Multiply the simplified parts together:

[tex]$$-2 \cdot \frac{1}{x} = -\frac{2}{x}.$$[/tex]

Thus, the simplified expression is

[tex]$$
-\frac{2}{x}.
$$[/tex]